Method for assisting with guiding a surface vessel for towing an underwater device by means of a cable

A system for assisting the guidance of a surface vessel intended to tow an underwater device by means of a tow cable, the system comprising:

• a computation device comprising:
• a discretization unit, configured to discretize the geographical sector around the surface vessel into a plurality of zones, with each zone being classified according to a degree of accessibility from among a set of degrees of accessibility, as a function of current navigation parameters of the surface vessel comprising the length of the tow cable;
• a first computation unit, configured to compute a set of candidate trajectories of the surface vessel in said geographical sector, with each candidate trajectory corresponding to a different gyration rate from the current position of the surface vessel;
• a classification unit, configured to classify each candidate trajectory as a function of the degree of accessibility of the zone of the geographical sector traversed by the possible trajectory, and as a function of the feasibility of one or more predefined actions on said candidate trajectory;
• a human-machine interface configured to generate a display of the zones and of the candidate trajectories as a function of their classification and/or to transmit the instructions relating to said actions.